class TestCase():

    # self 是当前的意思 当前对象
    def __init__(self):
        self.title = ""
        self.step = []
    
    def __str__(self):
        """
            解决打印自定义对象时,打印的对象的地址.
        """
        return "TC.title = {},TC.step = {}".format(self.title,self.step)

